Delia Spencer was a Social Worker who visited with the Peacock family in September 2006. Husband Ashley was concerned about his wife Claire's irrational behaviour, insistence that there had been a mix-up at Weatherfield General's maternity unit and that newborn son Thomas wasn't her baby.

Ms Spencer spoke briefly with Claire although she quickly retreated into the garden. As Ashley voiced his concerns, the severity of Claire's mental illness was played-down somewhat by the social worker - stating that the baby hadn't been harmed in any way whilst in Claire's care. As Ashley went to answer the door to Doctor Turner from the Medical Centre, Ms Spencer left the house stating that she would be writing a report and would be back in touch in a few days' time.

Credited as "Social Worker", the character's full name was given in dialogue.